Additional Information:
With notifications you can do a lot more things. On the "When" tab you can define complex filters to tell Mail Inspector when this notification have to be fired. For example you can inter " This e-mail address is being protected from spam bots, you need JavaScript enabled to view it " as the Sender and play another sound only when you get mail from Mary.

As you maight saw you can do other things than displaying a message box. To confiure this go to the "What" tab and choose one or more of the other actions. These are:

• Show a message box just as you did before.
  
• Play a sound from a .WAV audiofile. There are some default sounds shiped with Mail Inspector but you can choose also your own soundfiles.
• Show an animation in the system tray (thats next to the clock in the taskbar). You can choose one of the default animations of Mail Inspector as well as defining your own tray-animation by creating a bitmap file containing all the animations steps in it.
• Show a comic animation. This needs the Microsoft Agent subsystem which needs to be installed on your system. On Windows XP it is already pre-installed. You then can use one of the default Microsoft Agents (Peedy, Robo, Merlin or Gene) or download one of hunderds of additional agent characters from the web.